> I'm very new to MAME and i'm trying to get the software working. Started playing a > classic - Double Dragon. > I play for two minutes until the giant breaks through the wall, and suddenly > everything is really slow.
That is accurate to the original. The Double Dragon series in arcades is famous as some of the worst-programmed games of all time. The NES version, on allegedly far inferior 8-bit hardware, runs much better (and is the version most people fondly remember playing).